1. A hook shaped echo accompanied by a mesocyclone associated with the catastrophic rainstorm of 25 July 1957;Arakawa;J.Appl.Met.,1967
2. Elsom , D. E. Meaden , G. T. 1982 Tornadoes in the United Kingdom
3. Waterspouts;Gordon;Weather,1951
4. Tornado in south-east Essex on 7 August 1973;Griffiths;Met.Mag.,1974
5. Funnel cloud seen at Chester, 28 July 1959;Hoddinott;Met.Mag.,1960